Sealing device



C. GUILER SEALING DEVICE Filed Sept. 28, 1945 ATTORNEY.

Patented Oct. 4, 1949 UNiTED STATI-:s PATENT OFFICE- SEALING DEVICE Cameron Galler, Westboro, Mass. Application September 28, 1945, Serial No. 619,155

1 claim. l

This invention relates to sealing devices and is particularly adapted to be associated with bearings and members supporting a rotating, reciprocating, oscillating, vibrating, stationary or like members or a coupling for such members.

It is well known that fluid lubricants and like elements, applied to a bearing supporting a coactng member, will be emitted from the bearing surfaces due to required clearances, pressures and other characteristics. It is also well known -that stufiing boxes or glands provided with a lubricant or associated with pressure elements require VVconstant attention and adjusting to prevent the elements from leaking.

Accordingly, one of the primary objects of the present invention is to provide a seal that will retain and confine the lubricant or like elements substantially within effective limits and surfaces and will-retain or confine the elements by means of a self-.tightening or adjusting type seal instead of requiring manual adjustment.

Another object of the invention is to provide a seal for bearings and the like that isreadily adaptable to properly aligned or misaligned bearing members. V

A further object of the invention is to provide a seal for bearings and other'members that is so constructed and arranged in a manner that will prevent any accumulation of excessive internal pressures due to changes of temperature or other conditions.

A still further object of the invention is to .provide a seal for bearings and other members that may be conveniently and easily assembled and wherein elements may be readily replaced working parts.

The foregoing objects are intended as a general statement and are not to be construed as limiting the invention thereto as other features and advantages of the invention will become apparent as the following detailed description progresses, references being had to the accompanying drawing wherein:

Fig. 1 is a longitudinal section of a lbearing end supporting a rotatable member and having the present invention embodied therewith.

Fig.' 2 is anend view of the parts shown at Fig. 1, with the bearing end cap omitted.

Fig. 3 is a view corresponding substantially to Fig. 1 but shows an adaptation of the present invention to form a double fluid seal.

As illustrated, the rotatable member. Ill is supported in a bearing II having an annular chamber I2 adapted to receive the fluid seal housing I3, that is retained in its seated position by the bearing end cover I la.`

The housing I3 is provided with an annular channel I3a in which is disposed a sealing ring III that is substantially cylindrical in cross section and preferably formed of a resilient material, such, for example, as rubber or a material that would be eiective to closely engage with a cylindrical or shaft member. Either one or both inner side walls may be provided with serrated or like faces I3b for a purpose that will presently appear. Also disposed in the housing channel I3a and engaging with the outer periphery of the sealing ring I4 is a garter spring I5. The inside diameter of the garter spring I5 is normally of a less diameter than the outside diameter of the sealing ring I4 and when in assembled relation acts to compress the sealing ring I Il against the cylindrical rotatable member I0. Preferably, the a bore of greater diameter than the rotatable member I0 so as to permit self centering of the sealing elements.

It is to be noted that, in axial cross section, the diameter of the sealing ring III is greater than the width of its retaining channel. In assembling the sealing ring I4 its cross-sectional diameter is compressed by the side walls and engages with the serrations l3b in the channel I3a and thus the sealing ring I4 is restrained against rotating in the channel by its frictional contact with the channel side walls and the serrated face or faces. With the present combination of a resilient sealing ring I4 and a garter compressing spring I5 the sealing elements are self-centering and urged into close contact with the rotatable member I0.

The housing I3 is provided with vents I6 that connect with the` interior channel I3a for the purpose of preventing an accumulation of undesirable internal pressures.

At Fig. 3 the housing I 'I is provided with a pair of channels I 8, I9 and each channel is provided with a sealing ring 20 and garter compressing spring 2I of scribed.

While the present illustration shows and describes a preferred embodiment of the invention, it is to be understoodthat it is capable of many modifications. `Changes, therefore, -in the construction and arrangement may .be made without departing from the spirit and scope of housing I3 is provided with the character above de-` AMaasai? the invention as disclosed and set forth in the appended claim, in which it is the intention to claim all novelty inherent in the invention as broadly as permissible in view of the prior art.

What I claim is:

A pressure seal for inner andi outer cooperating members comprising a housing in said outer member, said housing having an annular channel therein open to said inner member, a resilient annular element disposed in said channel and bearing against said inner member, said annular element having a normal width greater than the width of said channel, a spring surrounding said annular element, said spring having a normal inside diameter less than the outside diameter of said annular element whereby said spring distorts the cross sectional area of the annular member and forces it against said inner member,

and a vent extending from the annular channel at a point adjacent said spring to the inner member on the low pressure side of said annular element.

CAMERON GUILER.

REFERENCES CITED The following references are of record in the file o i this patent:

UNITED STATES PATENTS 

